19799668 has 12 divisors (see below), whose sum is σ = 39599392. Its totient is φ = 8485560.

The previous prime is 19799657. The next prime is 19799671. The reversal of 19799668 is 86699791.

19799668 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 353538 + ... + 353593.

Almost surely, 2^19799668 is an apocalyptic number.

It is an amenable number.

19799668 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

19799668 is a wasteful number, since it uses less digits than its factorization.

19799668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 707142 (or 707140 counting only the distinct ones).

The product of its digits is 1469664, while the sum is 55.

The square root of 19799668 is about 4449.6817863753. The cubic root of 19799668 is about 270.5324108159.

The spelling of 19799668 in words is "nineteen million, seven hundred ninety-nine thousand, six hundred sixty-eight".